[8] As director of the Ethnic Affairs Department, Yiong backed initiatives reaching out to Taiwanese indigenous people and those of Mainland Chinese descent.

[9][10][11] During his tenure, the party passed the Resolution on Ethnic Diversity and National Unity,[12] and issued a report on Japanese rule in Taiwan.

[22][23] Yiong and other Hakka drew attention to the lack of promotion and resources devoted to the culture under the Ma Ying-jeou administration.

[24] After losing the legislative election, Yiong worked for Thinking Taiwan, an organization affiliated with Tsai Ing-wen, as director of its Social Force Development Center.

He was a member of the Culture and History Council at the Community Construction Society and the Alliance to Preserve Four Four South Village as a National Relic.

[37] Yiong has served as the deputy chairman of Taiwan Friends of Tibet, and the executive director of the Deng Liberty Foundation.